Finding the Fourth Proportional to 21,131.34, 31,694.49 and 5,550.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,131.34 : 31,694.49 = 5,550.18 : x
2. Step 2: Convert to fraction form
   21,131.34/31,694.49 = 5,550.18/x
3. Step 3: Cross multiply
   21,131.34x = 31,694.49 × 5,550.18
4. Step 4: Simplify right side
   21,131.34x = 175,910,124.51
5. Step 5: Solve for x
   x = 175,910,124.51/21,131.34
6. Step 6: Final answer
   x = 8,324.61